I like it the dagger, because he don't need the FUC* items to kill many people. He need normal equips and a normal dagger to kill. I know haste/critical damage/mortal strike [if exist.] will help a lot. But the power of the dagger is the BLOW. If you have a AS ++++, doesn't matter, the power is the blow, if you have SA critical damage, he will up to 200 the damage of blow. :P
Infinity Dagger to life. <3